Perpetua Stibnite Gold antimony project secures $255mn in strategic funding

Perpetua Resources

Perpetua Stibnite Gold antimony project has secured $255mn in new strategic equity from Agnico Eagle and JPMorgan. The fresh capital will fund project development, continued exploration, working capital and general corporate needs. As a result, Perpetua Stibnite Gold antimony project strengthens its path toward construction while positioning itself as a key US critical minerals supplier. The raise also highlights growing investor appetite for assets linked to national and economic security.

Perpetua’s financing package combines mining and financial sector firepower. Agnico Eagle will invest $180mn for about 7.7mn shares, taking a 6.6pc stake in Perpetua. Meanwhile, JPMorgan will acquire roughly 3.2mn shares for $75mn, equal to a 2.7pc holding. Both invested at $23.30/share, underscoring a shared valuation view on the Stibnite Gold antimony project.

The deal also includes significant upside optionality for both investors. Agnico Eagle and JPMorgan receive warrants to purchase up to 2.9mn and 1.2mn additional shares, respectively. They can exercise at $31.46/share after one year, and up to $38.45/share three years after closing. As a result, both backers gain leveraged exposure to future value creation at the Perpetua Stibnite Gold antimony project. The placements are expected to close on Tuesday, further de-risking Perpetua’s capital structure.

Perpetua has already broken ground at Stibnite Gold after meeting US Forest Service financial assurance conditions. Conditional approval from the USFS in September allowed the company to start early construction work. The project hosts an estimated 148mn lbs of antimony reserves, alongside gold, making it one of the most strategically important antimony developments in North America. Prior to this equity raise, Perpetua secured several hundred million dollars in 2025, including $425mn in June and another $49mn in July. The company also expects up to $2bn in debt financing from the US Export-Import Bank, which would anchor a full project funding package.

Strategic investors reinforce US critical minerals security

The new capital confirms that critical minerals are now squarely in mainstream investment focus. Agnico Eagle, a major gold producer, gains exposure to a large gold-antimony system with embedded optionality on US security-linked demand. Meanwhile, JPMorgan is deploying capital through its new “Security and Resiliency Initiative,” which targets up to $10bn in equity for sectors vital to US national and economic security. This explains why the Perpetua Stibnite Gold antimony project sits at the intersection of mining, defense and industrial policy.

For the US, Stibnite’s antimony output could become a strategic pillar of supply diversification. Antimony is essential for defense, flame retardants and various advanced materials, yet supply is heavily concentrated abroad. Therefore, a domestically anchored Perpetua Stibnite Gold antimony project directly supports resilience goals. However, execution risks remain, including permitting finalisation, construction timelines, capital cost control and future antimony price volatility. Even so, the depth and quality of recent funding suggest strong confidence in the project’s long-term economics.

The Metalnomist Commentary

Perpetua’s latest raise confirms that capital is increasingly flowing toward critical minerals projects with clear policy tailwinds. The alignment of a top-tier gold miner, a global bank and US export credit support gives Stibnite unusual strategic weight in the antimony chain. If delivered on time and budget, the project could become a benchmark for how Washington-aligned finance rebuilds Western control over niche but vital metals.

Perpetua Resources Advances Plans for US Antimony Supply Chain Amid Rising Geopolitical Tensions

Perpetua Resources

Perpetua Resources is forging partnerships and conducting feasibility testing to establish a domestic antimony supply chain in the US, as China's export suspension amplifies the need for local sourcing.

Developing a US-Based Antimony Supply Chain

Idaho-based Perpetua Resources is taking significant steps to establish a domestic antimony supply chain by partnering with Sunshine Silver Mining and Refining and conducting metallurgical testing with US Antimony (USAC). The move comes at a critical time as the US grapples with the implications of China’s suspension of antimony exports, which began on December 3, 2024.

Antimony, a critical mineral essential for flame retardants, batteries, and defense applications, has seen rising demand amidst global supply chain vulnerabilities. Perpetua’s efforts are centered on its Stibnite Gold Project in Idaho, the only domestic reserve of antimony in the US, containing an estimated 148 million pounds (67,130 tonnes). During its first six years of operation, the project is expected to meet approximately 35% of US antimony demand.

Testing Partnerships for Processing Feasibility

To advance its vision, Perpetua has initiated:

• Feasibility testing with Sunshine Silver Mining and Refining at the Sunshine Mine Complex, also located in Idaho. Third-party engineers are developing a flowsheet to optimize the processing and refining of antimony from various ore types.

• Metallurgical testing with Montana-based USAC, where Perpetua is providing antimony concentrate samples from Stibnite to determine the specifications needed for commercially viable antimony products.

These partnerships are key to ensuring that the Stibnite Gold Project can support a fully domestic supply chain for antimony, reducing reliance on foreign imports.

Geopolitical Drivers and Market Implications

The urgency for a domestic supply chain has intensified following China’s decision to halt antimony exports to the US. Between January 2022 and October 2024, the US imported:

• 15,665 tonnes of antimony metal from China, representing 22% of total imports.

• 55,506 tonnes of antimony trioxide, accounting for 69% of total imports.

China's export suspension highlights the strategic importance of Perpetua’s efforts, as the US seeks to secure access to critical materials amid escalating geopolitical tensions.

Conclusion

Perpetua Resources’ initiatives, supported by partnerships with Sunshine Silver and USAC, position the company as a cornerstone of America’s critical mineral strategy. With the Stibnite Gold Project poised to reduce the nation’s dependency on foreign antimony, Perpetua is aligning itself with the growing demand for supply chain security in the face of global uncertainties.

Perpetua Resources EXIM Loan Could Advance US Antimony Supply From Stibnite

Perpetua Resources

Perpetua Resources EXIM loan expectations have moved into the final approval stage as the US antimony miner seeks $2.7bn in financing for its Stibnite Gold antimony-gold project in Idaho. The proposed loan from the US Export-Import Bank would support development of one of America’s most important domestic antimony projects.

The EXIM board unanimously decided to notify Congress of the proposed loan. This step begins a 25-day Congressional notice period before the agency’s board can vote on the final loan decision.

Perpetua Resources EXIM loan approval is not yet a firm financing commitment. However, the notification marks a major milestone after more than two years of work between Perpetua and EXIM to secure project financing.

Stibnite Project Targets Domestic Antimony Security

The Stibnite Gold project has strategic value because Perpetua estimates it contains 148mn lb of antimony reserves. Antimony is used in military applications, flame retardants, lead alloys, batteries, cables and other industrial products.

The US has limited domestic antimony supply, making Stibnite important for critical mineral security. A successful development could reduce dependence on foreign supply chains and support defense-linked material availability.

Perpetua received a preliminary, non-binding indicative term sheet from EXIM in September. The proposed financing remained subject to due diligence and the formal loan application process.

Federal Permitting and Financing Could Unlock Development

Perpetua received its final federal permit needed to start construction after being selected for a federal expedited permitting initiative last April. That permitting progress gives the project a clearer development pathway, although financing still needs final approval.

The Perpetua Resources EXIM loan would be significant because mine development requires large upfront capital before production can begin. For critical minerals projects, government-backed financing can help bridge the gap between strategic importance and commercial financing risk.

If approved, the loan could become a model for US support of domestic mineral projects tied to defense and industrial resilience. It would also show that antimony has moved from a niche specialty metal into a national security priority.

The Metalnomist Commentary

Perpetua’s EXIM process shows that critical minerals policy is becoming capital policy. The US can identify strategic minerals, but supply security only improves when permitting, financing and processing capacity move together.

Idaho Antimony Project Receives Final Federal Permit for 148 Million Pound Reserve

Idaho Antimony Project

Idaho antimony project development reached a critical milestone as Perpetua Resources secured final federal permits for the Stibnite Gold project. The Idaho antimony project contains estimated reserves of 148 million pounds of antimony, addressing critical supply chain vulnerabilities as the US produced no marketable antimony in 2024 according to the US Geological Survey, making the Idaho antimony project essential for domestic critical minerals security.

Critical Minerals Initiative Accelerates Strategic Project Development

Idaho antimony project advancement benefits from federal critical minerals initiatives designed to strengthen domestic supply chains. The Stibnite project was selected in the first wave of a federal initiative launched in April to expedite permitting for critical mineral projects. This selection demonstrates government recognition of antimony's strategic importance for flame retardants, military applications, and lead-antimony alloys used in batteries and cables.

Meanwhile, the project began its permitting journey in 2016, reflecting the complex regulatory environment surrounding large-scale mining operations. The eight-year federal permitting timeline highlights challenges facing domestic critical minerals development despite government support for supply chain resilience. Idaho Governor Brad Little signed an executive order in January aimed at simplifying state-level mining permit processes.

State Permits and Financing Requirements Remain Outstanding

However, construction cannot commence until state permitting completion and additional financing arrangements. Idaho's regulatory approval remains pending despite the federal permit milestone, creating continued uncertainty for project timelines. The dual permitting structure demonstrates coordination challenges between federal and state authorities for critical minerals projects.

Therefore, Perpetua requires substantial additional financing beyond current funding commitments to begin construction activities. The company secured approximately $75 million from the US Department of Defense, $12.5 million in equity financing, and $8.5 million from silver production royalties. The US Export-Import Bank indicated potential provision of up to $1.8 billion in debt financing, representing the largest component of the financing package.

Domestic Supply Chain Partnerships Support Project Viability

Furthermore, Perpetua established strategic partnerships to develop comprehensive antimony processing capabilities within the United States. The company signed initial agreements with Sunshine Silver Mining and Refining and US Antimony in December to explore processing and testing opportunities. These partnerships address downstream processing requirements essential for complete supply chain integration.

As a result, the domestic partnership approach creates vertically integrated antimony production capabilities from mining through refining. This comprehensive strategy aligns with government objectives to reduce dependence on foreign antimony sources while supporting defense and industrial applications requiring reliable domestic supply. The partnerships also provide technical expertise and market access for Perpetua's antimony concentrate production.

The Metalnomist Commentary

The Idaho antimony project's federal permit approval represents a crucial step toward establishing domestic antimony production capability, addressing a critical gap in US strategic minerals supply where the nation currently produces zero marketable antimony despite significant defense and industrial demand. While state permits and financing challenges remain, the project's advancement through federal critical minerals initiatives demonstrates how government support can accelerate strategic resource development for national security priorities.

Perpetua Receives $6.9M from U.S. Army to Advance Domestic Antimony Supply Chain

Perpetua Resources

Stibnite Gold Project to Support Strategic Ammunition Material Testing

Perpetua receives $6.9M from U.S. Army for antimony testing, reinforcing the strategic role of domestic critical mineral development in national defense. The funding will support feasibility testing of antimony trisulfide production from the company’s Stibnite Gold Project in Idaho, targeting military-grade applications such as munitions and explosives.

This award builds on Perpetua’s existing $15.5 million contract from the Defense Ordnance Technology Consortium (DOTC) received in 2023. To date, the U.S. Department of Defense has allocated more than $80 million to the company, highlighting the urgency to establish a “ground-to-round” domestic antimony supply chain. The Stibnite deposit contains an estimated 148 million pounds of antimony, making it one of the most significant potential sources in North America.

U.S. Eyes Antimony Independence as China Cuts Exports

The U.S. relies heavily on imports for antimony, a critical mineral essential to over 300 types of munitions. However, China suspended antimony exports to the U.S. in December 2024, intensifying the need for secure domestic sources. Between January 2022 and October 2024, the U.S. imported 15,665 tonnes of antimony, with 22% coming from China.

As part of a broader national push, Perpetua recently received final federal permits for construction at the Stibnite site after being selected for expedited approval. The mine will produce both antimony and gold, making it one of the few U.S.-based projects directly aligned with defense-critical materials policy. As Perpetua receives $6.9M from U.S. Army for antimony testing, the company moves closer to restoring a vital supply chain link that has been offshore for decades.

The Metalnomist Commentary

Perpetua’s expanded partnership with the U.S. Army signals a turning point in reshoring defense-critical mineral supply. The Stibnite project could anchor a secure domestic antimony chain as global geopolitical tensions continue to restrict foreign access.

Perpetua antimony mine development wins US approval and financing support

Perpetua antimony mining

Perpetua antimony mine development at the Stibnite Gold project has cleared a major US regulatory hurdle. The US Forest Service has granted conditional approval to begin mine construction after eight years of permitting review. As a result, Perpetua Resources can now advance early works, subject to securing full project financing.

US backs Perpetua antimony mine development with blended public and private finance

Perpetua antimony mine development is now underpinned by a substantial mix of equity, grants and planned debt. The company raised $425mn in June through a $325mn public share offering and a $100mn private placement. Meanwhile, Perpetua expects to secure up to $2bn in debt financing from the US Export-Import Bank, significantly derisking the project’s capital stack.

In parallel, the US Department of Defense has already provided more than $80mn, including $6.9mn from the US Army in May. This direct support confirms antimony’s status as a strategic material for defense and national security. Therefore the Stibnite Gold development sits squarely within Washington’s broader push to localise critical mineral supply chains.

Perpetua antimony mine development targets China-dependent supply gap

The Perpetua antimony mine development comes as the US confronts a complete lack of commercial-scale domestic antimony production. According to the US Geological Survey, the country currently produces no primary antimony at scale. However, demand remains robust for military uses, flame retardants and antimony–lead alloys in batteries and cables.

China’s December ban on antimony exports to the US has sharpened urgency around diversification. As a result, US policymakers view Stibnite Gold as a flagship project for rebuilding secure supply outside Chinese control. If executed on time and budget, the mine could reduce exposure to geopolitical shocks in a tight global antimony market.

The Metalnomist Commentary

Perpetua’s progress illustrates how quickly critical mineral projects can move once policy, capital and security interests align. The decisive test will be execution: any delays or cost overruns could reopen the US antimony gap and reinforce China’s leverage in this niche but vital market.

US Greenlights Perpetua's Stibnite Gold-Antimony Mine, Paving Way for Domestic Supply

Perpetua Resources

The United States has given the final go-ahead to Perpetua Resources mine plan for its Stibnite gold-antimony project in Idaho, marking the culmination of a lengthy permitting process that began in 2016. This significant milestone brings the project closer to potential development and could bolster domestic supplies of critical antimony.

Final Record of Decision and Next Steps

The US Forest Service issued its final record of decision for Stibnite, clearing the path for Perpetua to focus on securing the necessary financing and remaining federal and state authorizations.  The company aims to make a construction decision this year. Perpetua has been actively raising capital for the project, estimated to cost $1.3 billion in 2020.  Recent efforts include an equity sale launched in November, complementing existing funding sources such as the Department of Defense.

Stibnite's Significance in a Changing Market

Located near Yellow Pine, Idaho, Stibnite holds economic reserves of 148 million lbs of antimony, which Perpetua plans to extract over the mine's projected 15-year lifespan.  Production is anticipated to begin in 2028, with construction estimated to take three years, according to the company's September investor presentation.  China's December decision to ban antimony exports to the US has further accelerated the drive to establish a domestic supply chain for this crucial metal. Antimony is used in a variety of applications, including electric batteries, ammunition, and renewable energy technologies.

Strategic Partnerships and Market Dynamics

Following China's export ban, Perpetua has forged agreements with US Antimony (USAC) and Sunshine Silver Mining and Refining to explore opportunities for processing ore and concentrate from Stibnite into antimony products.  USAC itself plans to restart its Maduro smelter in Mexico this year, having secured deals to source antimony ore from Australia and Thailand.  This comes after USAC shuttered operations at the smelter in March due to profitability issues.  Antimony prices have seen an uptick in the US and Europe since China added the metal to its export restriction list in mid-August, prompting Western consumers to seek alternative supply sources.

Perpetua Resources Secures $425mn to Advance US Antimony Mining

Perpetua Resources

Financing Boost for Strategic Mineral Development

US miner Perpetua Resources has raised $425mn through two financing agreements, reinforcing its position in critical mineral supply. National Bank of Canada Financial Markets and BMO Capital Markets purchased 24.6mn shares for $325mn, with the deal expanded from an initial $300mn due to stronger-than-expected demand. In parallel, private investor Paulson & Co. committed $100mn in a private placement, providing additional momentum.

This funding strengthens Perpetua’s development of the Stibnite Gold project in Idaho, which contains an estimated 148mn lbs of antimony reserves along with gold. The project recently secured its final federal permit in May, following its selection for a federal fast-track initiative in April. These milestones pave the way for construction and production to begin.

Strategic Role of Antimony in US Supply Chains

Perpetua has also received over $80mn from the US Department of Defense, including $6.9mn from the US Army in May. This support underscores antimony’s critical role in military applications, flame retardants, and lead-alloy batteries. The US produced no marketable antimony in 2024, according to the US Geological Survey, highlighting the importance of domestic projects like Stibnite to reduce reliance on foreign supply.

As a result, Perpetua’s financing success comes at a pivotal moment for US mineral security. With construction nearing, the company is positioned to become a vital domestic producer of antimony, a material central to both defense and energy resilience.

The Metalnomist Commentary

Perpetua’s $425mn financing underscores investor and government recognition of antimony’s strategic importance. With the US currently reliant on imports, the Stibnite project could emerge as a cornerstone of reshoring efforts in critical minerals. However, success will depend on balancing environmental concerns with the urgency of strengthening national supply chains.

US antimony trisulfide supply gets pilot-plant boost from Perpetua ore

Perpetua Ore Mining

The US antimony trisulfide supply chain is moving toward pilot-scale production. Perpetua Resources will supply ore samples from its Stibnite Gold Project for testing. Therefore, the US antimony trisulfide supply story now shifts from geology to processing proof.

Modular pilot plant targets critical mineral refining

The pilot plant effort centers on processing flexibility and faster learning cycles. Idaho National Laboratory will commission a modular pilot processing plant in Idaho. Meanwhile, the plant will refine several critical minerals, including antimony.

Perpetua will ship representative ore samples for pilot-scale runs. The goal is to produce antimony trisulfide concentrate suitable for defense-related demand. As a result, stakeholders can validate flowsheets, recoveries, and concentrate quality earlier.

Defense funding adds momentum for domestic supply resilience

The project aligns with a broader push for secure domestic inputs in United States supply chains. US Department of Defense has already supported Perpetua’s testing pathway. In May, US Army provided $6.9mn for antimony ore feasibility testing.

Perpetua chief executive Jon Cherry framed the pilot as a scaling milestone for industry. However, pilot success must translate into reliable commercial production routes. Therefore, the US antimony trisulfide supply outlook now depends on execution and permitting pace.

The Metalnomist Commentary

Pilot plants often decide which critical mineral projects earn serious capital. However, antimony markets stay volatile and policy-driven. Therefore, downstream offtake clarity will matter as much as metallurgy.

Minimal Impact on US Antimony Prices Following China's Export Ban

Wogen Resources

China's recent decision to halt antimony exports to the US is expected to have a minimal effect on US antimony prices, despite the ongoing supply constraints from the Asian giant. This move comes as part of a broader export ban on "dual-use" items, including germanium and gallium, which the Chinese Ministry of Commerce announced will be effective immediately.

Market Response and Analysis

US market participants had largely anticipated the export ban, suggesting that the initial impact on antimony prices might be subdued. "The question now is where we go from here," a European trader explained to Metalnomist. He noted the need for the market to find stability in terms of price ceilings and floors.

Prior to the announcement, US traders had already begun testing lower price offers, ranging from $38,500 to $39,000 per ton on a cif basis. This adjustment came after a period of resistance to higher prices spurred by panic buying in the preceding months. According to another trader, while it's unlikely that prices will decrease significantly from current levels due to supply-side constraints, the market might see even fewer offers moving forward.

Global Search for New Suppliers

This ban underscores the growing urgency among global antimony consumers to find new supply sources. With a significant portion of the US antimony supply traditionally sourced from China, countries like India, Bolivia, Myanmar, and Vietnam may become alternative routes for this critical metal.

Potential Opportunities and Developments

In light of these supply challenges, Turkey could emerge as a beneficiary, given its substantial antimony production capacity. Additionally, new developments in Australia, such as the Hillgrove project in New South Wales, promise future relief, with plans to produce a notable portion of global antimony output starting in 2026.

In the US, Perpetua Resources is advancing its Stibnite gold-antimony project in Idaho, which is set to significantly contribute to the domestic supply once operational.

Idaho Moves to Accelerate Mine Permitting with New Executive Order

Perpetua Resources

Governor Brad Little Signs Speed Act to Streamline Mining Approvals

Idaho Governor Brad Little has signed an executive order to expedite the permitting process for mining projects and other large-scale developments. The Strategic Permitting, Efficiency and Economic Development (Speed) Act, signed on January 24, establishes a council to accelerate permit reviews and eliminate redundant regulations across state agencies.

Funding and Key Projects Under Review

The Speed Act’s $480,000 funding comes from Little’s Keeping Promises plan, aimed at reforming energy and mining permitting. Richard Stover, Idaho’s energy and mineral resources administrator, will chair the council, overseeing efforts to cut bureaucratic delays.

One major project expected to benefit is Perpetua Resources Stibnite gold-antimony mine near Yellow Pine, Idaho. The site holds 148 million pounds of antimony and still requires over 50 federal and state authorizations before construction can begin. Perpetua Resources has welcomed the Speed Act, aligning it with its vision for streamlined development.

USAC Expands Antimony Operations in Alaska Amidst Global Supply Chain Shifts

Antimony

Texas-Based Miner Secures New Claims to Strengthen North American Antimony Supply

Texas-based US Antimony (USAC) has taken a significant step to bolster its operations by securing a new set of antimony mining claims in Alaska. This move, facilitated through a $5.25 million option agreement, is strategically aimed at diminishing the Western supply chains’ reliance on Chinese antimony sources.

USAC's recent agreement allows them to explore 120 new claims across approximately 17,900 acres in Alaska. This development is built on historical data indicating the presence of near-surface antimony with high values, promising substantial yields for the company.

The financial structure of this deal involves staged payments of $3 million and exploration commitments worth $2.25 million over five and a half years. Additional aspects of the agreement include a net smelter royalty and potential for third-party joint ventures, highlighting a comprehensive plan to maximize resource extraction.

Building on a Robust Foundation in Alaska

Prior to this agreement, USAC already held significant interests in Alaska, with 93 claims spanning 14,880 acres acquired in 2024. The company plans to extend its exploration efforts through a dedicated field program aimed at assessing the potential of these new claims.

Further solidifying its North American presence, USAC is also advancing its smelting operations. This includes securing ore for its Mexican smelter, which is slated for a restart, and a collaborative deal with Perpetua Resources to process concentrate from the Stibnite antimony-gold project in Idaho.

Responding to Global Market Dynamics

These expansions come in direct response to China’s tightened export controls on antimony, including a complete ban to the U.S. as of last December. These restrictions have significantly impacted global supplies and resulted in increased antimony prices, making USAC’s expansion a timely strategic move.